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In Asia, some pearl oysters could be found on shoals at a depth of 5–7 feet (1.5–2.1 meters) from the surface, but more often divers had to go 40 feet (12 meters) or even up to 125 feet (38 meters) deep to find enough pearl oysters, and these deep dives were extremely hazardous to the divers.
Pearl diving ama were considered rare in the early years of diving. However, Mikimoto KÅkichi 's discovery and production of the cultured pearl in 1893 produced a great demand for ama . He established the Mikimoto Pearl Island in Toba and used the ama 's findings to grow his business internationally. [ 5 ]
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Main pearling areas in Western Australia Early diving recompression chamber at Broome, used to treat the Japanese divers for decompression sickness.. Pearling in Western Australia includes the harvesting and farming of both pearls and pearl shells (for mother of pearl) along the north-western coast of Western Australia.
In the interwar period the pearl trade was dominated by the Paris-based dealers Rosenthal, Pack, Mohammad Ali and Bienenfeld. After the beginning of World War II the market moved to Bombay. [13] There were around 30,000 pearl divers by the end of 1930, as pearling was the principal industry in Bahrain prior to the discovery of oil in 1932.
The correct definition of a South Sea pearl – as described by CIBJO and GIA – is a pearl produced by the Pinctada maxima [21] pearl oyster. South Sea pearls are the color of their host Pinctada maxima oyster – and can be white, silver, pink, gold, cream, and any combination of these basic colors, including overtones of the various colors ...
Illustration of an occupied diving bell.. The diving bell is one of the earliest types of equipment for underwater work and exploration. [10] Its use was first described by Aristotle in the 4th century BC: "...they enable the divers to respire equally well by letting down a cauldron, for this does not fill with water, but retains the air, for it is forced straight down into the water."
Victor Berge (1891 - 1974) was a pioneering diver of the early 20th century, raised in the Swedish town of Ockelbo, "a little village in the pine forests of Gestrickland" according to a description in "Pearl Diver". [1] After his father died at a young age, he eventually went to sea, where he spent the next forty years diving in the Pacific.